Pour spout carton



Nov. 14, 1944. K. F. SPALDING POUR SPOUT CARTON Filed June 4, 1942 5 Sheets-Sheet 1 IN V ENTOR.

nag /0037 Nov.'14, 1944. K. F. SPALDING POUR SPOUT CARTON Filed June 4, 1942 5 Sheets-Sheet 2 INVENTOR. q L/Le M M Nov. 14, 1944. K. F. SPALDING POUR SPOUT CARTON Filed June .4, 1942 5 Sheets-Sheet 5 a 6 i||||||1l:||1| m 9 6 u u m m L n w m u w m .m u m n, U -u L m m llll II a a; 5 u 7 9 m w 9 my iii- 20 9 m 9 n 1- w 9 m m 9 IINVENTOR. ZIZQffi/d:

f WW Nov. 14, 1944. K. F. SPALDING POUR SPOUT CARTON 5 Sheets-Sheet 4 INVENTOR.

Filed June 4, 1942 Z/ZQZ/a 1 34 4 Jaws Nov. 14, 1944. K. F. SPALDING 6 foun SPOUT CARTON 7 Filed June 4, 1942' K 5 Sheets-Sheet '5 a so Patented Nov. 14, 1944 lJNi'l'E rows. SPQEJ'E GAE/MEN Kenneth F. Spaiding, @al: Park, Kilt, assignor to F. Dorsey Montgomery, Chicago, Ill.

Application dune d, 19%, Serial No. ddfiliti'i 3 Claims. (Cl. 229==l'3) This invention relates to improvementsr-iifj cartons or'contain'ers of a type folded from a blank and arranged to include a closure at one.

endthereof adapted to form a pour spout. My invention is directed to an improved arrangementof the pour spout wherein the latter is hanged along one edge of the carton and has a right angledwing portion slidably contained in a pocket'iormed between adjacent inner and outer wall portions of the carton, so as to seal the carton against ingress of dirt or excessive moisture and leakage of contents from the carton at this point. 1

More specifically, my invention constitutes an improvement over the type of pour spout'carton disclosed in my prior Patent No. 2,095,720 issued Oct.- 12,1937, wherein the pocket for receiv ing the pour spout is formed in part by an adjacent portion or portions of an end flap form ing part of the carton blank. Although satisfactory for some purposes, prior forms of pour spout cartons, including those disclosed in my prior patent mentioned above, are more or less complicated in design, and usually require extreme care in folding so that they cannot be readily formed and sealed by machine and particularly they are unable to provide a sumciently tight seal against leakage from within when used as containers for fine powdery substances.

In carrying out my invention I provide a preformed blank designed so that when folded and sealed to form the carton the pour spout forms an integral sealed part thereof which may be ppened by breaking the connection along certain partiallycut lines of severance and wherein one of thewings of the pourspout is slidably con tained in a pocket which is .iormed between two side wall portions oi'the blank rather than an end flap thereof,. and wherein the two pocketforming side wall portions provide a complete and efiective seal against leakage even after the pour spout has been severed for opening. v

I also provide improved folding and sealing arrangements which eliminate much of the hand folding methods necessarywith previous forms of cartons of similar character.

Other features and advantages of my invention willapp'ear from time 'to time as the following description proceeds. v

The invention may best be understood by Fig. 2 is a perspective view of the carton shown inFig. 1, taken from a different angle and with the pour spout in open position.

Fig. 3 shows the blank used for forming the v carton shown in the preceding figures. This form of carton is hereinafter referred to as form A.

Fig. i is a; perspective view of a carton shown in the preceding figures drawn-to a somewhat larger scale, with one of the side walls partially broken awayand showing the end flaps in par tially folded position.

Fig. 5 is a perspective view showing a carton which may he made from a slight modification oi the blank shown in Fig. 3.

Fig. 6 is an enlarged detail section taken on line t d oi Fi .1.

Fig. '7 shows a modified form of blank for iorm= ing a carton somewhat similar to that shown in the preceding figures, but wherein one less 1 side wall is employed. This modification is here- 'inaiter referred to as iorm'B.

Fig. 8 is a detail perspective view of one end of the carton iorrxi B showing the peer spoilt in partially open position.

- Fig. 9 is an enlarged detail section taken on line S-d of Fig. 8.

Fig. 10 shows a blank for a. third modified form of carton hereinafter referred to as term (3.

. Fig. 11 is a detail perspective view of the top of the carton iorrn C showing \the pour spout in partially open position.

Fig. 12 is a detail perspective view of the carton form C showing the end flaps which form the pour spout in partially folded position.

Fig. 13 is a diagrammatic horizontal section or the carton form (3 showing the arrangement for iorming the side pochetior the pour spout wing.

Fig. 14 is a diagrammatic vertical section taken on line 'it-lt of Fig. 11 to indicate the-arrange ment of the end flaps and side walls when the carton is in fully sealed condition.

Fig. 15 shows a blank for iorming a modified form of carton somewhat similar to that shown in Figs.- 10 to 14. but providedwith a plurality -reference to the accompanying drawings, in

which Fig. 1 is a perspective view of a c0mp1eted carton in fully sealed condition, constructed in accordance with my invention.

of additional inner sidewalls. This modiflca tion is hereinafter referred to as form D.

Fig. 16 shows a blank for another modified form somewhat similar to the form of carton shown in Figs. 10 to 14, but wherein-the side wallsare of different widths. This form is here= inatter referred to as iorm 'E.

.1! shows a blank ior forming another modification of my invention hereinafter referred to as form F.

Fig. 13 is a detail perspective view of the upper end of the carton form F.

Fig. 19 is an enlarged detail perspective view v showing the end fiaps of form F in partially folded position.

partially open position.

Fig. 21 shows a blank for still another modification hereinafter referred to as form G.

Fig. 22 is a detail perspective view of the end of the carton form G in fully sealed position.

Fig. 23 is a detail perspective view of the carton form G with the pour spout in open position.

Figs. 24 and 25are detail sections taken on lines 24-24 and 25-25, respectively, of Fig. 22.

Fig. 26 shows a blank for a modification form l-I somewhat similar to form G, but wherein the pour spout is provided with two side wings.

Fig. 27 isa detail perspective view of a carton form H formed from the blank shown in Fig. 26 and showing the pour spout in open position.

- Fig. 28 shows a blank for a modification form I, wherein the pour spout wing is initially cut out of an adjacent end fiap.

Referring now to details of construction of the 30 embodiment of my invention illustrated in Figs. 1 to 6, both inclusive, which form is referred to herein as form A, the finished carton indicated at win Figs. 1 and2 ismadefromablankshown in Fig. 3 which is substantially rectangular in general outline. Said blank is creased along vertical lines .11, I2, i3, i4 and I and horizontal lines l6 and H to form side walls i8, i9, 24, 2|,

22 and 23. L'Ihe side walls II to 22, both inclusive, have lower extensions of equal length forming bottom fiaps 24 to 28, both inclusive, of the usual rectangular shape. The side wall 22 has no bottom flap, but cooperates with the other side wall portions to form a pocket for the pour spout as will presently be described.

' The carton top with the spout arrangement is formed from the two top flaps 24 and 21 which are extensions of the side walls I! and 2|, respectively. An intervening mp 22 severed from flaps 3|! and BI by cuts 32 and 34 is arranged to underlap the top from the side opposite the spout. 1

The flap so is out along the diagonal line indicated at 35 at the outer corner farthest removed from the flaps 2| and 22. It will be noted that this line'of severance terminates short of the crease i4, and a second line of severance ll is formed parallel with said crease line l4, but offset inwardly therefrom so as to form a shoulder '31. The purpose of this offset cut and shoulder I8 and ID. The arcuate portion 24 is separated from the side wall It by a horizontal cut II in line' with the horizontal crease II. A contiguous wing 40 'of substantially the same horizontal width as the arcuate portion 34 is formed of a part of the end flap ll by a line of severance extending from the horizontal score line it to the outer edge of the flap. 3i adjacent the center thereof. A projecting stop 42 is provided at the extreme lower comer of the wins 38.

The sidewall 23 has an upper end flap 48 connected thereto, having its lower inner comer cut 5 out along adiagonal line 44 and av horizontal line 45, the latter being in alignment with the horizontal crease line l6. As will presently appear, however, it may be desired in some instances to make the end fiap 43 in rectangular shape along the dotted line indicated at 46 and forming the lines of cut 44 and 46 by lines of severance so that the triangular portion defined by said lines will remain intact until the pour spout is finally opened and the triangular portion between lines 44, 45 and 46 is removed.

said out-away portion being defined by a semicircular cut- 4'! and an upright cut 48. This cutaway portion is of such shape and size as to accommodate the wing 38 and stop 42 of the pour spout when the carton is in complete folded posi-' tion, a will now be described.

The method of folding or forming the blank Just described into a carton will be understood,

by reference to Figs. 4 to 6. When the carton is in partly folded position as shown in Fig. 4-, the sides of the carton are first arranged as follows: Side wall 23 is folded inwardly on crease line it against wall 22, and its outer edge is brought into sealing relation by a strip of adhesive material 50 so as to be secured along the entire length of wall 22 adjacent crease line i4. then folded in registering position against the opposite outer side oi. wall 22. The top of the carton is completed as follows: The flaps 32 and 43 are first folded under, the fiap is then folded inwardly and flap 3| is folded over the end of the carton. While folding flap 3i downwardly, the wing-like portion 28 is inserted in the pocket or slot formed by the cutaway portion 41 of intermediate side wall 22 between the inner side wall 22 and the outer side wall l8, as clearly shown in Fig.4.

pour spout are left unsealed. v

with the arrangement of form A above described, the pour spout is sealed as longer. the severance line 4| remains intact. In opening the spout, the wing 40 may be raised by inserting the finger or a suitable tool beneath the curved corner of said wing so as to break the severance line 4|. As the free edge of said wing is raised,

the entire spout is hinged upwardly as indicated I in Fig. 2. It will be noted that ,thewing ll moves 60 in the pocket formed between side walls 22 and II and that the outer edge of said wing is guided in the notched portion 38 at the margin of fiap 2... Also, stop 42 on said wing is adapted to engage beneath the shoulder 31 on fiap 30 so as to 66 limit the swinging movement of the-spout to the substantially upright position shown in Fig. 2.

In order to provide more complete sealing'of the top of the carton a slight modification is shown in Fig. 5 wherein thecut-out lines 44 and 70 4| on top flap 42 are initially formed by lines of severance 44' and 48-. Thus the triangular section defined by the dotted line 42 in Fig. 3 remainsasapartofthefiapflservingasaninner sealing member until after the pour spout has. been opened. Said triangularportion can then The wall it is be punched outalong the lines 44 and 46 to open the carton.

It may also be found desirable to provide a relatively small tab shown in Fig. 5, hinged to I the side of end tab 30 below the shoulder 31,

shown in Fig. 3, which tab may be folded downwardly and secured to the adjacent outer face of side wall l8 when the carton is finally completed, so as to-reinforce the corner of the carton at the point-adjacent the notch 31 which restrains th stop 42 of wing 38.

The construction above described is such that the carton is effectively sealed around the pour spout, especially where the wing 38 enters the pocket formed between the side walls l8 and 23. It will be particularly noted that the walls l8 and 23 which form said pocket, both extend the full length of the carton, so that all of the side walls are capable of being readily formed and sealed on a folding machine. The inner wall 23 of said pocket provides a complete seal from the interior of the carton, whether the pour spout is closed or open.

Figs. 7 to 9 show a modified form B which embodies the same type of inner sealed pocket for the pour spout, but which is made from a blank, shown in Fig. '7, having one less side wall. This form includesside walls 55, 56, 51, 58 and Y59 which correspond in geneial with walls 18,

9, 20, 2| and 23, respectively; of form A, the wall 22 being omitted. The wall 59 forms the inner sealing wall for the pocket which is formed by inserting the wing between said inner wall and the outer side wall 55 adjacent-the hinged side of the pour spout, as shown in Fig. 9. The pour spout arrangement of form B differs somewhat from form A, in that the hinged side 60 of the spout extends only a part of the width of Y the top flap 6|, being separable from the latter on a curved severance line 62. Also, the projecting stop 63 on side wing 64 engages beneath the adjacent overhanging edge of the outer top flap 6| instead of engaging the edge of an inner top flap, as in formv A. Form B has a top flap 65 corresponding substantially with flap 30 of form A, including an outer corner cut out along line 68, but the extreme end flap '81 connected with sidewall 59 has a triangular section 58 (corresponding in function to the triangular sectiondefined by lines 44, 45 and 46 of form A) disposed on the outer instead of the inner' side of said flap, as clearly shown in Fig. '7.

Figs. to 14 illustrate a modified form C of cartonespeciallyadapted for use as a container which is substantially square in horizontal section, so that all theside walls are of substantially the same width. In this form the blank has side walls 68, 59, 10, II and 12 which correspond generally with side walls 55 -to '59, respectively, of the blank for form B shown in Fig. '7.

corresponding with a similar removable cut-out portion 68 of form 3, excepting that in the formof blank shown in Fig. 10 the cut-out portion may comprisea circular line of severance indicated at 8| instead of a triangular line of severance illustrated in connection with previous figures. As an additional protection against leakage, the end flap 89 has a tab 82 extending along the outer crease line 83 thereof.

lateral crease line, 85 as clearly shown in Fig. 10.

The pour spout end of the carton form' C is folded in substantially the same manner as form B, as indicated in Fig. 12. It will be noted, however, that the two end flaps l6 and 11 are folded under the end fiap 13 so that the cut-out portions 18 and 19 will leave an opening beneath the pour spout wing 14 when the latter is in open position, as shown in Fig. 11. The end flap 80 is preferably folded between the flaps 16 and H as shown in Figs. 12 and 14, with the tab 82 glued to the adjacent upright margin of the side wall 69. The tab 84 connected along the side wall 12 'is also glued to the adjacent side'of Wall. 69 as shown in Figs. Band 14. The tabs 82 and 84 thus form an additional sealing protection for the pocket formed between the side walls 68 and 12 for receiving the wing 14 of the pour spout.

It will be noted further from Fig. 12 that in Q folding the end flaps 16 amp 1! inwardly, the fiap 11 is folded last so as to be immediately below the end flap l3. Due to the cut 19 in flap which extends further from the pour spout corner than the arcuateline of severance 15 of the pour spout portion 15, it will be observed that the cut 19 will form an open space beneath the center of the arcuate line of severance. l5 when flap I3 is folded over fiap 11 so asto assist in permitting the fingernail or tool to break down- The side wall 12 also has a tab extending along its wardly through said line of severance and be inserted beneath the pour'spout for opening and raising the same.

As'an additional feature of protection against leakage from the bottom of the carton, it will be observed that all five side walls 68 to 12 of form C have rectangular'end flaps, 88 to 92, respectively, each of which is adapted to be folded, but that one of said end flaps, as for instance flap 92.

v is formed with its inner crease 93 slightly deeper Similarly the top flap 18 with pour spout wing 1-4 and associated cut-out portion 15 of top flap 4 l3 correspond with the parts 8|, 54 and 62 of form B. The adjacentend'fiaps l6 and 11 are the end of the carton, so that the outside corners are cut away along curved lines 18 and 18,

i respectively. f It will be noted that the curved line 19 is a different shape from line '18, being somewhat deepenat its center and shallower towards its edges than the out line 18. The purpose of this arrangement will presently appear. The fourth end flap 80 hinged to the side wall 12 isprovided with a removable cut-out portion of substantially the same cross sectional area as ferably terminatedshort of the transverse crease line on which they are to be folded or hinged. In practice I find that about 3 of an inch is satisfactory for this purpose. Allowing this uncut stock at the corners provides a wedge seal, combined with such adhesive or coating material that is used to seal the carton which gives subof'the carton.

Fig; 15 shows a blank of a modified form D stantial protection against leakage at the corners which is similar to the blank constituting form C in Fig. I 0, excepting that it is provided with three additional side walls 95, 96 and 91 of slightly less width than the five sidewalls 68 to 12. The

' ton corner,

additional side walls 95, 95 and 9? are also provided with upper and lower tabs 95*, 915 and 81*, respectively. It will be understood that in folding and assembling the form of carton D, the side walls 95, 95 and More first folded on the insideof the carton and the tabs 95, 95 and 91' thereof are glued to the adjacent upper and lower end tabs with which they are engaged. I find that a box constructed in accordance with the blank for form D can be used successfully as a substitute for tin cans or bottles heretofore employed as containers for liquids or the ilnest powdered material, and that such liquids or material will not leak or sift from the carton even under the roughest handling and usage to which the carton may be subjected.

Fig. 16 illustrates still another modified form E which is similar in most respects to form C shown in Fig. .10, excepting that the blank is intended for use in a carton which is oblong in cross section instead of square. In this instance, however, an additional side panel 98 with upper and lower end tabs 99 and I is provided of the same width as the two wider panels MI and I02 which determine the greater width 0! member covering the entire area of the bottom or the carton in substantially the same manner as previously described in connection with the bottom tab '92 of form C. The upper .flap 99 provided with a tab 406 along its inner margin adapted to be glued to the adjacent side wall 0! thewarton when it is in folded position. Top flap 99 has a suitable cut-out line I0I therein to be removed when the pour spout is open.

Fig. 17 illustrates the blank for a modified form. F wherein the side pocket for the pour spout wing is formed in a slightly different mannerthan disclosed in connection with the foreso e forms. I09, 0, III'and H2. The wing portion H3 of the pour spout is connected to the hinge portion Ht of said spout, which hinge portion forms substantially half of the end tab H5 connected to one of the wider side walls lit. The side pocket for the wing lid is provided by folding the extreme end wall its inwardly in reverse position against the adjacent end wall I09, and gluing the area Illil along one side of wall I00 to th outer face of a tab lit connected along the outer edge of the side wall H2, as shown in Fig. 19. With this form of side-pocket, the top flap III hinged to side wall H2 has a tab II'I connected to its outer end which is adapted to fold over the outer corner of side wall I09 as shown in Fig. 20, to form a stop for the spout wing I I3, as .well as a reinforcement for the car- The form of carton G shown in Figs. 21 to 24, shows an arrangement for locating the spout wing pocket in one of the wider side walls and hinging said spout along a narrower side .wall. The blank is shown in Fig. 21, wherein the pour spout consists of a wing I20 hinged toone side of an end tab I2I which is hinged in'turn to one of the narrower side walls I22. Three wide side This form includes side walls I08,

connected to the additional side wall 98 may be i escapee wall panels :23, m and 12s are provided, and

a narrower side wall I25 is. disposed between panels I24 and I25.

The pocket for the single side wing tilt is formed between the side walls I23 and 525, as shown in Fig: 24. The side wall I25 is folded on the inside of the carton, and has an end tab I21 which is glued to the inner face of the side wall I22 adjacent the margin of the side wall I23 so as to form a pocket sealed against leakage from the interior of the container. The inner wall I25 has a top flap B23 provided with an end tab I29 adapted to be glued along the inner surface or the side wall l22 Just below the hinged pourspout. The top flap I28 has a suit= able cut-out area defined by lines of severance I30. The side wall I24 hasa top flap 583 with a cut-out area I32 which is adapted to overlap the top flap I28. The side wall 623 has an end flap I33 generally rectangular in form and preterably of suflicientwidth that its inner upright wall I34 will be in abutting engagement with the outer edge I35 of the hinged spout portion I2I' when the carton is in closed position, as is shown in Fig. 22. The pour spout, of form G- is formed by a corner of end flap I2I, which is cut out along a line of severance I2I after the end flap I2I is in sealed position shown in Fig.

22. When the line'of severance I2I is broken,

the pour spout can be opened as shown in Fig. 23.

Figs. 26 and 27 show a modified form H similar to form G just described, excepting that the pour spout formed from end tab I40 is provided with two similar side wings I and I42, each being slidably mounted in side pockets formed between double side walls of the carton. Since two such pockets must be provided for form H, the blank shown in Fig. 26 is provided with four relatively wide walls I43, I44, I and it, with three intervening narrower side wall panels Ml, I48 and I 49 interposed alternately between said larger side walls. This form when folded pro vides one pocket for wing I 4i between side walls I43 and I45, and a second pocket for wing 5412 between side walls I144 and I465. The side wall I45 has a top flap defined by line of severance I 50 adapted to register with the pour spout when the latter is in open position as shown in Fig. 27.

With this form of pour spout, the end flap Mill is provided with a line of severance I40 joining the upper margins of the side wings Mil, so

that the outer end portion I5I of said end flap wall I5I at one end of the blank and a wide.

wall I58 at the opposite end of the blank. -Inter-= vening narrow side walls I59 and I50 together with a central, relatively wide side wall I6l are provided. Top flap 152 connected to side wall I58 is provided with a suitable cut-out portion on curved-line l5t,and end flap I54 connected to side wall I6| also has a suitable knock-out portion on line of severance I05 in registering position with the top wing I68 which in this form consists of a relatively small arcuate shaped and flap hinged to the upper margin of side wall W9.

In folding this form of box, the side wall H58 has an end tab I58 which is adapted to be glued to the area indicated at I59 of side wall 2,862,942 I59, with the side wall I58 on the inside of the side wall I51;

The end flap l6'I is first folded under. End flap I64 is then folded down, and the end tab Hi l at the side thereof is glued along the upper margin of side wall I59. End flap I62 is then folded over flap I64, and finally the end flap I56 is folded and glued across the top of the carton. It will-be observed that while folding the top flap I56, the pour spout wing I55 is fully severed therefrom,-so that said top wing can be tucked in the pocket formed between side walls I51 and I58, as previously described.

1 In the form shown, the end flap I64 has an extended outer margin I68 with a shoulder I69 which is adapted to form a stop for the end I55- of the side wing I55 when the carton is in fully sealed condition.

Although I have shown and described certain embodiments of my invention, it will be understood that I do not wish to be limited to the w exact construction shown and described, but that various changes and modifications may be made without departing from the spirit and scope line of severance of said outer flap so as to leave an open space beneath and along said line'of severance when said end flaps are in folded position.

2. In a carton formed of a blank including side walls and end flaps, a pour spout closure consisting of a corner portion of one of said end flaps hinged to one of said side walls, and a wing adapted to be folded at right angles to said corner portion, two of said side Walls adjacent said 'wing lapping each other and forming a pocket for receiving said wing and sealed from the interior of the carton, and another end flap hinged to the inner one of said side walls and having a glue flap hinged along one side thereof adapted to be secured along the upperedge of the side to which the corner portion of said pour spout is hinged, when the carton is in assembled condition.

3. In a carton formed of a blank including side walls and end flaps, a pour spout closure consisting of a corner portion of one of said end flaps hinged to one of said side walls and removable from said end flap along a line of severance, and a wing adapted to be folded at right angles to said corner portion, two of said side walls adjacent said wing lapping each other and forming a pocket for receiving said wing and sealed from the interior of the carton, said first named end flap having one edge thereof extended so as to overlap the pocket formed between adjacent side walls so as to form a stop for limiting the upward swinging movementof said wing when the said pour spout closure is in open position. F; SPALDING. 

